sulcus

American  

[suhl-kuhs] / ˈsʌl kəs /

noun

plural

sulci

1. a furrow or groove.

2. Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.

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sulcus British  

/ ˈsʌlkəs /

noun

1. a linear groove, furrow, or slight depression

2. any of the narrow grooves on the surface of the brain that mark the cerebral convolutions Compare fissure

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Other Word Forms

• subsulcus noun

Etymology

Origin of sulcus

1655–65; Latin: furrow

Compare meaning

How does sulcus compare to similar and commonly confused words? Explore the most common comparisons:

• gyrus vs. sulcus

Example Sentences

These patterns were based on sulcus depth and cortical thickness, which describe the folding of the brain surface and the thickness of the brain's outer layer.

From Science Daily

Soccer players who headed the ball at high levels showed abnormality of the brain's white matter adjacent to sulci, which are deep grooves in the brain's surface.

From Science Daily

"You can think about the intraparietal sulcus as having two knobs on a radio dial: one that adjusts focusing and one that adjusts filtering," Ritz said.

From Science Daily

One sticking point for several was whether it was possible to make any accurate judgement about brain structure based on the landmarks of the coronal suture and precentral sulcus.

From Science Magazine

He needed a sample from the superior frontal sulcus — but how big?

From New York Times